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(No Model.)

H HIBBERT,R. FAWGETT' & J. WORTHINGTON.

. TENSION DEVICE.

1x05110425; Y Patented Mar. 27, 1894.

" i fi W HW us mmcmn. LITNBQRAPHINQ COMPANY wmmarou n c TATES ATENTEnron.

HENRY HIBBERT, RICHARD FAWCETT, AND JOHN WORTHINGTON, OF PRESTON,ENGLAND.

TENSION DEVICE.

SPECIFICATION forming part of Letters Patent No. 512,043, dated March27, 1894. Application filed August 10, 1893. Serial No. 482.794. (Nomodel.) Patented in England November 10, 1891, No.19,487-

to which it appertains to make and use the same, reference being had tothe accompanying drawings, and to figures of reference marked thereon,which form a part of this specification.

This invention relates to tension devices,.

particularly such as are applied to spinning mules.

The purpose of this invention is to vary the tension upon the yarn, andcause it to be greatest when said yarn is passing upon the largestdiameter of the cop, conversely the least upon the smallest diameter ofthe cop.

This invention has special reference to the copping motions ofself-acting spinning mules and provides for automatic variation of thetens on upon the yarn in the formation of a cop 1n such manner that thetension shall be greatest when winding-on the largest diameter of thecop, and be gradually diminished until the winding-on reaches the pointor smallest diameter of the cop.

In the accompanying drawings, Figure 1 illustrates the arrangement ofthe improved apparatus as above described in side view; showing theposition of the parts when the carriage is in readiness to advance. Fig.2 shows part of the same in plan view. Fig. 3 1s a view similar to thatin Fig. 1, showing the position of parts when the carriage has reachedits outermost stretch and the tension is greatest, and Fig.- 4. a partof the same in plan vlew. Fig. 5 is an end view of the parts shown inFig. 4..

In carrying out our invention we have represented at 1 a cop in processof formation with the yarn at 2, passing about its smallest 50;diameter. The stripping or counter-taller arm or sickle so termed, isshown at 3,

while to uphold the same and in lieu of the weights heretofore in use,we employ a helical spring. The counter-faller rod is at tand thecopping faller arm at 5, while a projecting bracket or finger at 6 isfastened to the counter-faller rod 4. The coiled spring 7 which servesto uphold the stripping arm 3 in the present instance is attached at itsupper end to the finger 6 and at its lower end to the outwardlyprojecting arm of the bellcrank lever 8 mounted on the arm 9 of thebracket 10 affixed to the front of the mule carriage 11.

Journaled on a stud secured in the pendent arm of the bell-crank lever 8is an anti-friction roll 12 while a vertically arranged rock lever 13with its fulcrum at 14 is pivoted to the arm 15 of the bracket 10. Thelower end of the rock lever 13 may be conveniently fitted with anadjustable sliding shoe 16, for facility of adjustment. Moreoverattached to the floor 19 is a bracket 18 while a long arm or bar 17 ispivoted thereto. Laterally affixed to said bar is a stud 20 which restson the inclined face of a vertical plate 21 carried on a horizontal arm22 projecting from one side of the nut 23 which engages the screwthreaded spindle 24. This latter is revoluble and is carried in thestand or pillar 25 of the bracket 26, the latter being likewise fastenedto the floor 19.

Affixed upon the outer end of the spindle 24 is a ratchet wheel 27havingaclick or pawl 28 which is pendent from one end of the pivotallever 29 mounted on the stand 25; the opposite and free end of the saidlever is adapted to contact with the under side of the bent arm ordiagonal finger 30 at each outward movement of the mule carriage,thereby lifting the operating click or pawl 28 to impart a slightrotation to the ratchet wheel and the spindle. Torender the ratchetwheel 27 inoperative when the nut 23 has been moved the requireddistance upon the spindle, or such as will raise the bar 17 sufficientlyto give the necessary tension, we provide a bent finger 31 which movesthe pawl 28 clear from the ratchet wheel. It will be understood thatmovement of the nut 23 serves to raise the long pivoted bar 17 andthereby produces the varying tension. The screw threaded spindle may berotated manually in either direction through the medium of a handle onthe squared end 32 of the said spindle 24.

The action of the apparatus is as follows At the commencement of a freshset of cops on the bare spindles the ratchet wheel 27 is wound backuntil the stud on thelong pivoted arm 17 has worked down to the bottomof the inclined plate 21 carried by the screw nut whereupon the long armwill have assumed a horizontal position (see broken lines at Fig. 1).The mule having been started the lower end 16 of the rock lever 13 atthe front of the carriage rests upon the upper face of the long arm 17below and assumesa diagonal position relatively thereto and while movingoutwardly with the carriage, is inoperative. When the carriage hasreached the end of its stretch or forward movement, the lower end 16 ofthe rock lever 13 will have passed beyond the outer end of the long arm17 the rock lever 13 thereupon assuming a more or less vertical positionthe rear part of the upper end of the said lever resting against thefriction roll 12 on the lower part of the bellcrank lever 8. Fig-s1 and3 show in full and broken lines the varying positions and action of therock-lever 13, the bell-crank lever 8, and the spring 7 when the longarm 17 is in its highest and lowest positions respectively. Meanwhilethe ratchet wheel 27 will by the actuation of the carriage and the bentarm 30 on the lever 29 and click or pawl 28 have been partially movedround thus moving the screw nut 23 farther from the said ratchet wheeland causing the inclined plate 21 to press against the under side of thestud 20 and thus partially raise the outer end 33 of the long arm 17. Ateach succeeding stretch of the carriage the operation as above describedis repeated until the cop bottom has been fully formed and its maximumdia1neter attained by which time the bent finger 31 (see also Fig. 3)'connected to the screw nut 23 will have moved the click or pawl 28 clearof the ratchet wheel 27, which along with the screw nut 23, inclinedplate 21 and long pivoted arm 17 will remain stationary until the cop lis completed, the outer end 33 of the long arm 17 having meanwhile beengradually raised until it now assumes an inclined or sloping position.The upper face of the long pivoted arm at its outer or free end 33 issloped off and the bottom of the lower arm of the rock lever 13 isrounded to facilitate the sliding up of the foot 16 of the said lever onto the face of the long arm in its raised or inclined position. As themule carriage gradually recedes the foot 16 of the rock lever 13 firstslides up to the highest point of the inclined long arm 17 where itexerts its greatest action upon the bell-crank lever S and draws thehelical spring 7 to its greatest tension and by that time thecopping'faller wire has reached the greatest diameter of the cop thetension on the spring 7 and therefore the upward pressure of the wheel27 and attendant mechanism for gradually raising the outer end of thelong arm 17 during the formation of the cop bottom as above describedneed not necessarily be employed although its use especially whenspinning fine numbers is desirable. When the said apparatus is notemployed the inner end of the arm 17 need not be pivoted and the outerend of the said arm is set or fixed permanently at the required heightin the first instance, the said long arm therefore remaining stationaryat one uniform slope or angle of inclination throughout the entirebuilding of the cop.

What We claim is 1. In a tension device for spinning mules, thecombination with a counter faller wire, of a spring to actuate the samein one d1rection, a lever to which said spring is con nected, and meansfor changing the position of said lever, whereby the tension on the saidspring is varied so as to be greatest when the yarn is being wound uponthat portion of the cop which is largest in diameter, and least when theyarn is being wound upon that portion of the cop which is smallest indiameter,

substantially as set forth.

2. In combination with a cop, a suitable support therefor, and aspring-actuated connter-faller wire, of a bell-crank lever, a pivotedbar for horizontal or oblique adjustment, and a rock-lever adapted towipe upon the bar with one end and to bear against the bell-crank leverwith its opposite end, to produce a constantly varying tension upon theyarn in the act of winding-on, substantially as specified.

3. In a device for automatically varying the tension in winding-on, thecombination with a cop, a copping faller-arm and its supporting rod, acounter-taller wire, a bellcrank lever, and a coiled springinterconnecting said faller wire, and bell-crank lever, of a pivotalbar, mechanism for raising one end of said bar duringthe act ofwinding-on, and a rock lever, one end of which Wipes upon the bar, theother rests against the bell-crank lever, substantially as hereindescribed.

4. In self-acting mules a spring-actuated counter-faller Wire, itsbell-crank lever, and a rock lever, one end of which rests against saidbell-crank lever, combined with a pivotal bar on which the opposite endof said rock lever rests, a transverse stud in said bar, a revolublespindle, an inclined plate carried byanut upon said spindle, andmechanism for moving said plate to raise the pivotal bar upon eachadvance of the mule carriage, substantially as stated and described.

5. In automatic tension devices a mule carriage having a bracket 10, thebent arm 30, bell-crank lever 8, and rock lever 18, all mounted uponsaid bracket, a series of spin d1es,a copping faller arm 5, acounter-faller arm 3, its rod, and a spring which connects arm 3 withthe bell-crank lever, combined with a pivotal bar 17, an inclined plateadapted to raise one end of said bar, a revoluble spindle 24, the sleevenut 23, and mechanism for rotating said spindle at intervals of time,substantially as specified.

In testimony whereof we affix our signatures in presence of twowitnesses.

HENRY HIBBERT. RICHARD FAWOETT. JOHN WORTHI'NGTON.

